diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/swsusp_asm64.S | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/swsusp_asm64.S b/arch/powerpc/kernel/swsusp_asm64.S index 86ac1d90d02b..22045984835f 100644 --- a/arch/powerpc/kernel/swsusp_asm64.S +++ b/arch/powerpc/kernel/swsusp_asm64.S @@ -46,10 +46,19 @@ #define SL_r29 0xe8 #define SL_r30 0xf0 #define SL_r31 0xf8 -#define SL_SIZE SL_r31+8 +#define SL_SPRG1 0x100 +#define SL_TCR 0x108 +#define SL_SIZE SL_TCR+8 /* these macros rely on the save area being * pointed to by r11 */ + +#define SAVE_SPR(register) \ + mfspr r0, SPRN_##register ;\ + std r0, SL_##register(r11) +#define RESTORE_SPR(register) \ + ld r0, SL_##register(r11) ;\ + mtspr SPRN_##register, r0 #define SAVE_SPECIAL(special) \ mf##special r0 ;\ std r0, SL_##special(r11) @@ -103,8 +112,15 @@ _GLOBAL(swsusp_arch_suspend) SAVE_REGISTER(r30) SAVE_REGISTER(r31) SAVE_SPECIAL(MSR) - SAVE_SPECIAL(SDR1) SAVE_SPECIAL(XER) +#ifdef CONFIG_PPC_BOOK3S_64 + SAVE_SPECIAL(SDR1) +#else + SAVE_SPR(TCR) + + /* Save SPRG1, SPRG1 be used save paca */ + SAVE_SPR(SPRG1) +#endif /* we push the stack up 128 bytes but don't store the * stack pointer on the stack like a real stackframe */ @@ -151,6 +167,7 @@ copy_page_loop: bne+ copyloop nothing_to_copy: +#ifdef CONFIG_PPC_BOOK3S_64 /* flush caches */ lis r3, 0x10 mtctr r3 @@ -167,6 +184,7 @@ nothing_to_copy: sync tlbia +#endif ld r11,swsusp_save_area_ptr@toc(r2) @@ -208,16 +226,39 @@ nothing_to_copy: RESTORE_REGISTER(r29) RESTORE_REGISTER(r30) RESTORE_REGISTER(r31) + +#ifdef CONFIG_PPC_BOOK3S_64 /* can't use RESTORE_SPECIAL(MSR) */ ld r0, SL_MSR(r11) mtmsrd r0, 0 RESTORE_SPECIAL(SDR1) +#else + /* Restore SPRG1, be used to save paca */ + ld r0, SL_SPRG1(r11) + mtsprg 1, r0 + + RESTORE_SPECIAL(MSR) + + /* Restore TCR and clear any pending bits in TSR. */ + RESTORE_SPR(TCR) + lis r0, (TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS)@h + mtspr SPRN_TSR, r0 + + /* Kick decrementer */ + li r0, 1 + mtdec r0 + + /* Invalidate all tlbs */ + bl _tlbil_all +#endif RESTORE_SPECIAL(XER) sync addi r1,r1,-128 +#ifdef CONFIG_PPC_BOOK3S_64 bl slb_flush_and_rebolt +#endif bl do_after_copyback addi r1,r1,128 |